Yup. Whenever I'm in traffic I use a Vivo-Bike Illuminati in strobe mode on my helmet. It's available for less from a couple other vendors on Amazon under other brand names. It's a lightweight USB rechargeable, remarkably bright for the size and weight.

Being helmet mounted, it's a bit more visible in traffic because it's above roof height for most cars. Ditto my rear helmet light, a Blackburn 2'Fer on red strobe. The combination are so lightweight I don't even notice them. And the Illuminati light is so directional I can increase visibility by looking directly at drivers who don't seem to be paying attention, or drivers approaching intersections, driveways, etc., to be sure they see me. Seems to work, even in daytime.

I also use bike mounted front and rear lights, but usually only on steady and usually only in dim ambient light.